Most excellent post LJH That Felix guy sure does make us do a lot of work with those little questions of his.

As euphonius mentioned, they must be coming from the same factory as the Cardo, the only difference I can see is that my Cardo units don't have the little antennae, and my charger has two plugs to charge both units at the same time. Unfortunately they don't work with any kind of USB charger, so you need to cary the wall charger. On the plus side, my wife and I were getting 2-3 days of solid use during our America tour this summer and we were riding 10 hours a day and one of us was talking most of the time. Just to answer another question that Felix will probably ask... the battery can not be accessed an can not be replaced, this is a common problem with all bluetooth headsets and I doubt any of them will last more than 3-5 years as rechargeable batteries tend to go bad over time.

Thanks for all the details...¥438 is a great price.

Cheers!
ChinaV